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Soviet Railways No. 6998
In the late thirties, the Soviet Railways tested several streamlined steam locomotives to increase the speed of express trains. One was No. 6998, designed by Dmitry Vasilyevich Lvov and built at Luhansk (Voroshilovgra...
General
| Property | Soviet Railways No. 6998Remove |
|---|---|
| Built | 1938 |
| Manufacturers | Luhansk |
| Wheel arrangement | 4-6-4 (Hudson) |
| Gauge | 1,520 mm (Russian broad gauge) |
Dimensions and weights
| Property | Soviet Railways No. 6998Remove |
|---|---|
| Length | 29.38 m |
| Length loco | 16.87 m |
| Wheelbase | 13.16 m |
| Rigid wheelbase | 0.49 m |
| Empty weight | 123 t |
| Service weight | 138 t |
| Adhesive weight | 64.5 t |
| Axle load | 21.5 t |
| Water capacity | 49,000 l |
| Fuel capacity | 22 t (coal) |
Boiler
| Property | Soviet Railways No. 6998Remove |
|---|---|
| Grate area | 7.04 m² |
| Firebox surface | 31.23 m² |
| Tube heating surface | 216.47 m² |
| Evaporative heating surface | 247.7 m² |
| Superheater surface | 119 m² |
| Total heating surface | 366.7 m² |
Power plant
| Property | Soviet Railways No. 6998Remove |
|---|---|
| Driver diameter | 2,200 mm |
| Boiler pressure | 15 bar |
| Expansion type | simple expansion |
| Cylinders | two, 670 x 770 mm |
Power
| Property | Soviet Railways No. 6998Remove |
|---|---|
| Power source | steam |
| Indicated power | 2,200 kW (2,991 PS) |
| Starting effort | 200.3 kN |
Calculated values
| Property | Soviet Railways No. 6998Remove |
|---|---|
| Factor of adhesion | 1 : 3.16 |
| Optimal speed | 68 km/h |
| Power-to-weight ratio | 15.9 kW/t |
| Heating Surface Equivalent | 641.9 m² |
| Cylinder volume/HSE | 1 : 845.91 |
| Adhesive weight/Total | 1 : 2.14 |
| Tractive force/Heating surface | 1 : 11.41 |
| Grate area/Heating surface | 1 : 52.09 |
| Firebox/Tube surface | 1 : 6.93 |
| Total/Superheater | 1 : 2.08 |
